Spoke---I thought I would give an update since we both had the issue at the same time....
The intermittent out light for me was the passenger side rear bulb brake/tail light below the led tail light. It's behind the right access door and its the bulb housing that pulls straight up. I just needed a new w16w bulb. I picked up a 2 pack at napa for $4.85. I bought the equivalent base type at napa marked 921LL.
Last edited by x3brian; 01-14-2013 at 09:41 AM.